Island



W. H. HOPE.

PROCESS OF PREPARING ROLLS FOR CLOTH PRINTING.

,APPLICAIION FILED MAR. s. 1919.

B COLUMBIA PLANUGRAPH 10., WASHIN Patented July 22, 1919.

'NVENTEIR.

ATTDPNEY.

I FFT WILLIAM Hhrnor n, or PROVIDENCE, RHODE ISLAND.

. PROCESS OF BREPARING ROLLS FOR CLOTH-PRINTING.

Specification of Letters Patent.

Patented July 22, 1919.

\ Application filed March 6, 1919. Serial N 0. 281,086.

To all whom it may concern:

Be it known that I, WILLIAM H. Horn, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Processes of Preparing Rolls for Cloth-Printing, of which the following is a specification.

This invention relates to certain new and useful improvements in a process of pre paring rolls for cloth printing.

. The principal object is to bring the terminal and fine lines of a design or configuration into clear prominence or relief on the cloth or other material, and the invention consists in a series of steps by which the outline and fine lines are initially etched and protected by a resist preliminary to etching 1n the ground of the design.

In the drawing Figure 1 shows the initial step in the process, consisting first in cutting the outline and other fine lines of the design, and

Fig. 2 shows the final step of cutting and etching the ground part of the configuration,

Referring more in detail to the process, the printing roll is first varnished and placed in a machine to have the outline and other fine lines 1 of a design which in the present instance consists of a leaf spray cut through the varnish coating for the purpose of etching. The outline thus cut is now etched and then the lines are filled with a resist, such as wax, to protect them against the subsequent etching step.

The next step is to varnish the entire roll again, either by dipping or otherwise, and then the ground of the design is put in, as indicated at 2, the remainder or outline and fine lines of the design being still covered by the resist. The ground is next etched subsequent to which the roll is finished, as by bufiing off the varnish coating and removing the resist by a somewhat solvent bath of alkali so as to thoroughly clean out all the lines and cut portions.

The resist protects the initially cut outline and fine lines from the acid in the second etching and thus maintains their ori inal width by preventing their being onlarged by a second attack of the acid. By

reason of this protecting resist the design is brought out in bold, clear relief when printed on the cloth or other fabric. The two etching ste'ps carried on by the present process permits the whole attention being given to the two main cutting operations independently of one another, a. e. the outlines are of one character and the ground cutting is of another character requirin a difierent depth of cut and a different period for the action of the etching acid. Thus, special attention may be given each part of the design and consequently a clear and prominent rint is obtained.

Having t us described my invention, what I claim as new and desire to secure by Letters Patent is 1. The process of preparing print rolls for cloth printing, consisting in coating the roll with varnish and cutting the out ine and other fine lines of a design thereon, etching the lines thus out, filling the etched lines with a resist, recoating the roll with varnish, cutting the ground of the design on the roll, etching the ground, and finally removing the resist from the outline and other fine lines by a somewhat solvent bath.

2. The process of preparing rolls for cloth printing, consisting in coating the roll with varnish, cutting and etching a design thereon, filling the lines thus etched with an acid resist, revarnishing the roll, cutting the ground of the design, etching the ground, itnd removing the resist from the first etched mes.

3. The process of preparing rolls for cloth printing, consisting in varnishing the roll and cutting and etching an outline of a design thereon, filling the outline with a resist of wax, revarnishlng the roll, cutting and etching the ground of the design thereon,

sist filler.

4:. The process of preparing rolls for cloth printing, consisting in varnishing the roll and cutting and etching an outline of a design thereon, protecting the outline thus out with an acid resist, revarnishing the roll and the resist, cutting and etching the ground of the design on the roll, and cleaning the outline of the resist.

buffing ofi' the varnish and removing the re- 5. The process of preparing rolls for cloth In testimony whereof I have signed my printing, consisting in cuttlng and etchlng name to this specification 1n the presence of one character of lines of a design on a Vartwo subscrlblng Witnesses.

nished r011, protecting the etched lines, coat- WILLIAM H. HGPE. 5 ing the roll with more varnish, and cutting Witnesses:

and etching another character of lines of the ADA E. HAGERTY,

design. J. A. MILLER.-

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

